All the new Ebon (Furia/Ebur) gear is level 91-100 crafting, and usually requires two sub-crafts (probably at 60). They all require stupidly expensive ingredients, including ingredients off new NMs. Synergy will add 3 extra stats on top of what's already on them, so it's those stats that will determine whether they are worth attempting or not.
I'm interested to see if there's more to the equipment made by these. If you take a look, the stats definitely don't justify the cost of creation. Possible candidates for the Evolith system?
For the small benefits the final pieces give, the price in mats for this stage alone is *** ridiculous. Thank you SE for giving us yet another way to piss away our hard-earned gil.